Title :
Over-moded operation of waveguide-to-coax transition at 60 GHz
Author :
Pardalopoulou, Maria ; Solbach, Klaus
Author_Institution :
Hochfrequenztech., Duisburg Univ., Germany
fDate :
27 Sept.-1 Oct. 2004
Abstract :
In the design of a 57-63 GHz MMIC amplifier, a hermetic waveguide-to-coax transition was involved. A relatively large-diameter coaxial glass bead had to be employed, allowing the TE11-mode to propagate from 52 GHz upwards. Measurements showed transmission blocked around 60 GHz, which could be explained as a resonance of the TE11-mode. Conditions for blocking-free operation were analysed and an improved transition was designed, realized and tested which shift the frequency of the TE11 resonance upward outside the band.
Keywords :
MMIC amplifiers; coaxial waveguides; hermetic seals; millimetre wave amplifiers; waveguide transitions; 57 to 63 GHz; MMIC amplifier; TE11 resonance frequency shift; TE11-mode propagation; blocking-free operation; coaxial glass bead; hermetic waveguide-coax transition; over-moded operation; transmission blocking; Coaxial components; Conductors; Frequency; Glass; Impedance; MMICs; Resonance; Tellurium; Transmission line theory; Waveguide transitions;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422170
